(2) without the prior written consent of Lessor, install an Engine on an airframe (other than the Airframe) owned by Lessee free and clear of all Liens except: (A) those of the type permitted under Section 14 hereof and those which apply only to the engines (other than Engines), appliances, parts, instruments, appurtenances, accessories, furnishings and other equipment (other than Parts) installed on such airframe (but not to the airframe as an entirety); and (B) the rights of the participants under normal interchange or pooling agreements which are customary in the airline industry and do not contemplate, permit, result in or require the transfer of title to the airframe or engines installed thereon;